A compass is a navigational instrument that shows direction. It consists of a magnetized needle that aligns itself with the Earth's magnetic field, pointing towards the magnetic north. This allows users to determine their orientation relative to the cardinal directions: north, south, east, and west. Compasses are commonly used in outdoor activities like hiking and sailing. The compass has a long history, dating back to ancient China, where it was first used for divination and later for navigation. Today, it remains an essential tool for explorers, mariners, and hikers, providing a reliable way to find one's way in unfamiliar terrain.